Data sheet
| Hydraulic data | |
|---|---|
| Maximum operating pressure PN | 10 bar |
| Max. fluid temperature Tmax | 95 °C |
| Min. fluid temperature Tmin | 2 °C |
| Min. ambient temperature Tmin | -10 °C |
| Max. ambient temperature Tmax | 40 °C |
| Temperature range at max. ambient temperature +40 °C T | +2...+70 °C |
| Max. permitted total water hardness | 3.57 mmol/l (20°dH) |
| Motor data | |
|---|---|
| Mains connection | 1~230 V, 50/60 Hz |
| Rated power P2 | 15 W |
| Rated current IN | 0.26 A |
| Min. speed nmin | 700 1/min |
| Max. speed nmax | 3400 1/min |
| Power consumption P1 min | 4 W |
| Power consumption P1 max | 20 W |
| Emitted interference | EN 61000-6-3 |
| Interference resistance | EN 61000-6-2 |
| Electromagnetic compatibility | EN 61800-3 |
| Insulation class | F |
| Protection class motor | IPX4D |
| Speed control | Frequency converter |
| Motor protection | integrated |
| Materials | |
|---|---|
| Pump housing | Stainless steel |
| Impeller | PPO-GF30 |
| Shaft | Oxide ceramic |
| Bearing | Carbon-graphite |
| Installation dimensions | |
|---|---|
| Port-to-port length L0 | 150 mm |
Equipment/function
| Function | |
|---|---|
| Control mode | Δp-c for constant differential pressure Constant speed (3 speed stages) Constant speed (n-const.) |
| Display | Actual volume flow Actual power consumption |
| Pump venting function | Manual |
| Equipment | |
|---|---|
| Approvals and labels | CE VDE EAC UKCA TR RCM |
| Display | LED segment display |
| Display information | Basic Versio n: LED display (small) for showing the set head or speed stage. |
| Pump control | Electronic-controlled pump |
| Quick electrical connection | Wilo Connector |
| Thermal insulation shell | Yes |
| Operating elements | Green button |
Pump curves
Dimensions and dimensions drawings
Yonos PICO-Z 20/0,5-4 150
Wiring diagram
Blocking current-proof motor
Single-phase motor (EM) 2‐pole ‐ 1~230 V, 50 Hz
Ordering information
| Product data | |
|---|---|
| Brand | Wilo |
| Product description | Yonos PICO-Z 20/0,5-4 150 |
| Article number | 4255412 |
| EAN number | 4062679265803 |
| Colour | Green |
| Minimum order quantity | 1 |
| Date of sales availability | 2023-04-01 |
| Packaging | |
|---|---|
| Packaging type | Cardboard box |
| Packaging property | Sales packaging |
| Pieces per pallet | 146 |
| Number per layer | 20 |
| Dimension, weight | |
|---|---|
| Length with packaging | 194 mm |
| Length L | 156 mm |
| Height with packaging | 121 mm |
| Height H | 115 mm |
| Width with packaging | 213 mm |
| Width W | 153 mm |
| Gross weight, approx. m | 1.8 kg |
| Net weight, approx. m | 1.5 kg |
This circulator is suitable only for drinking water.
Maintenance-free domestic hot water circulator (glandless pump version) with screwed connection, blocking-current proof synchronous motor according to ECM technology and built-in electronic power control for continuous differential pressure control. Suitable for all domestic hot water systems (+2 to +95 °C).
Standard-equipped with:
- Preselectable control modes for optimum load adjustment:
- Δp-c for constant differential pressure
- Constant speed (3 constant speed stages)
- Constant speed (continuously adjustable)
- LED display for setting the setpoint, displaying current consumption in watts and flow rate in m³/h, as well as displaying fault and warning messages (error codes)
- Integrated motor protection
- Automatic deblocking function
- Manual pump venting function for venting the rotor chamber
- Manual restart
- Pump housing made of stainless steel
- Quick electrical connection with Wilo-Connector
- Thermal insulation shell
| Operating data | |
|---|---|
| Max. fluid temperature Tmax | 95 °C |
| Min. fluid temperature Tmin | 2 °C |
| Min. ambient temperature Tmin | -10 °C |
| Max. ambient temperature Tmax | 40 °C |
| Temperature range at max. ambient temperature +40 °C T | +2...+70 °C |
| Maximum operating pressure PN | 10 bar |
| Max. permitted total water hardness | 3.57 mmol/l (20°dH) |
| Motor data | |
|---|---|
| Emitted interference | EN 61000-6-3 |
| Interference resistance | EN 61000-6-2 |
| Mains connection | 1~230 V, 50/60 Hz |
| Power consumption P1 max | 20 W |
| Max. speed nmax | 3400 1/min |
| Rated current IN | 0.26 A |
| Protection class motor | IPX4D |
| Threaded cable connection | 1 x PG11 |
| Materials | |
|---|---|
| Pump housing | Stainless steel |
| Impeller | PPO-GF30 |
| Shaft | Oxide ceramic |
| Bearing | Carbon-graphite |
| Installation dimensions | |
|---|---|
| Pump connection | G 1¼ |
| Pump connection (alternative designation) | RP 3/4 DN 20 |
| Port-to-port length L0 | 150 mm |
| Ordering information | |
|---|---|
| Brand | Wilo |
| Product description | Yonos PICO-Z 20/0,5-4 150 |
| Net weight, approx. m | 1.5 kg |
| Article number | 4255412 |
Filtered by
Document type
Language
Datasheet and documentation
Installation and operating instructions
Wilo-Yonos PICO-Z - Quick Guide
| Article Number | 4252849 |
| Issue date | 2022-11 |
| Edition | 01 |
| Language | bg, cs, da, de, el, en, es, et, fi, fr, hr, hu, it, lt, lv, nl, no, pl, pt, ro, ru, sk, sl, sr, sv, tr, uk |
Wilo-Yonos PICO-Z
| Article Number | 4258256 |
| Issue date | 2023-02 |
| Edition | 01 |
| Language | en |
Group Statement
Group Statement REACH
| Issue date | 2021-05 |
| References | REACH |
| Certification and inspection body | Self Declaration |
| Issue date | 2026-04-17 |
| Language | language neutral |
UKCA
UKCA 2223544-03
| References | 2223544-03 |
| Certification and inspection body | Self Declaration |
| Issue date | 2025-10-01 |
| Language | language neutral |
Mechanical accessories
Pipe installation (1) | |||
Screwed connections/adapters | |||
Screwed connection Rp ¾ x G 1¼, 1 Set | 4233251 | ||
Electrical accessories
Pump control (1) | |||
Timer switch SK 601N | |||
Switchgear SK 601N | 2120443 | ||
Plug (1) | |||
Connector | |||
Wilo-Connector | 4200870 | ||
With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.
Read moreExtended Warranty | |||
Extended Warranty Glandless pumps | 2219589 | ||
Supervision | |||
Supervision Glandless pumps | 2219320 | ||
Installation | |||
Installation Glandless pumps | 2219355 | ||
Commissioning | |||
Commissioning Glandless pumps | 2219390 | ||
Maintenance | |||
Maintenance BASIC Glandless pumps | 2219530 | ||
Maintenance COMFORT Glandless pumps | 2219416 | ||
Maintenance PREMIUM Glandless pumps | 2219545 | ||
System Optimisation | |||
System Optimisation Glandless pumps | 2219250 | ||
Energy Solutions | |||
Energy Solutions Glandless pumps | 2219285 | ||
Repairs | |||
Repair Glandless pumps | 2219609 | ||
